To beat unmercifully
"Nigga, I thrapped ma belt all up in that wanksta's mouth good."
by The Phantom April 23, 2003
used by armed forces operating on rafts.
term used to describe the action of beating a knot on a wet rope to tighten the hold.
Thrap that rop good and proper ross...it'll keep the raft together
by Razzimus January 18, 2006
To dance your tits off
Hey mate, lets go to Gurnmills, have some cheekies, and thrap the night away....with some gak
by gak man April 08, 2005

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